From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark McLoughlin Subject: [PATCH 4/4] KVM: split out kvm_free_assigned_irq() Date: Fri, 28 Nov 2008 10:26:11 +0000 Message-ID: <1227867971-1716-4-git-send-email-markmc@redhat.com> References: <1227867951.3643.24.camel@blaa> <1227867971-1716-1-git-send-email-markmc@redhat.com> <1227867971-1716-2-git-send-email-markmc@redhat.com> <1227867971-1716-3-git-send-email-markmc@redhat.com> Cc: kvm@vger.kernel.org, Sheng Yang , Mark McLoughlin To: Avi Kivity Return-path: Received: from mail17.svc.cra.dublin.eircom.net ([159.134.118.216]:41478 "HELO mail17.svc.cra.dublin.eircom.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751227AbYK1K13 (ORCPT ); Fri, 28 Nov 2008 05:27:29 -0500 In-Reply-To: <1227867971-1716-3-git-send-email-markmc@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Split out the logic corresponding to undoing assign_irq() and clean it up a bit. Signed-off-by: Mark McLoughlin --- virt/kvm/kvm_main.c | 31 ++++++++++++++++++++++++------- 1 files changed, 24 insertions(+), 7 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 54d25e6..bcdf715 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -200,17 +200,19 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian) enable_irq(dev->host_irq); } -static void kvm_free_assigned_device(struct kvm *kvm, - struct kvm_assigned_dev_kernel - *assigned_dev) +static void kvm_free_assigned_irq(struct kvm *kvm, + struct kvm_assigned_dev_kernel *assigned_dev) { - if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested_type) - free_irq(assigned_dev->host_irq, (void *)assigned_dev); - if (assigned_dev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI) - pci_disable_msi(assigned_dev->dev); + if (!irqchip_in_kernel(kvm)) + return; kvm_unregister_irq_ack_notifier(&assigned_dev->ack_notifier); + kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id); + assigned_dev->irq_source_id = 0; + + if (!assigned_dev->irq_requested_type) + return; if (cancel_work_sync(&assigned_dev->interrupt_work)) /* We had pending work. That means we will have to take @@ -218,6 +220,21 @@ static void kvm_free_assigned_device(struct kvm *kvm, */ kvm_put_kvm(kvm); + free_irq(assigned_dev->host_irq, (void *)assigned_dev); + + if (assigned_dev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI) + pci_disable_msi(assigned_dev->dev); + + assigned_dev->irq_requested_type = 0; +} + + +static void kvm_free_assigned_device(struct kvm *kvm, + struct kvm_assigned_dev_kernel + *assigned_dev) +{ + kvm_free_assigned_irq(kvm, assigned_dev); + pci_reset_function(assigned_dev->dev); pci_release_regions(assigned_dev->dev); -- 1.5.4.3